(() => {
    class Person {
        constructor(id, name, sex) {
            this.id = id;
            this.name = name;
            this.sex = sex;
        }
        sayHello() {
            console.log(`我叫${this.name},我的id是${this.id},我的性别是${this.sex}`);
        }
    }
    const person = new Person(123, "小张", "男");
    person.sayHello();
})();
